A Frog in the Valley

Note to self, this is exactly the type of things I forget and have a hard time finding after a while…

A default MediaWiki installation assigns certain rights to default groups (see below). You can change the default rights by declaring the $wgGroupPermissions array in LocalSettings.php with the syntax “$wgGroupPermissions[â??groupâ??][â??rightâ??] = boolean;”. To change permissions for all groups, use “*” as the group. For example, to disable editing for all users, add “$wgGroupPermissions['*']['edit'] = false;”.

Via Help:User rights - MediaWiki